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[en] Rotational and vibrational temperatures and ratios of CN/C2 and C12/C13 have been determined for three carbon stars: BL Ori, BD+38grad955 and HD 182040. The abundances were derived by fitting the observational blends to the theoretical profiles corrected for instrumental broadening. The derived values of CN/C2 and C12/C13 are in contradiction with the equilibrium values of the CNO cycle. (Author)
Journal
Acta Astronomica; ISSN 0001-5237; 
; v. 29(1); p. 115-133
; v. 29(1); p. 115-133